/*
 * Copyright (C) 2007-2016 Artima, Inc. All rights reserved.
 * 
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *     http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 * Example code from:
 *
 * Programming in Scala, Third Edition
 * by Martin Odersky, Lex Spoon, Bill Venners
 *
 * http://booksites.artima.com/programming_in_scala_3ed
 */

import scala.util.parsing.combinator._

class JSON extends JavaTokenParsers {   

def value : Parser[Any] = obj | arr | 
                          stringLiteral | 
                          floatingPointNumber | 
                          "null" | "true" | "false"

def obj   : Parser[Any] = "{"~repsep(member, ",")~"}"

def arr   : Parser[Any] = "["~repsep(value, ",")~"]"

def member: Parser[Any] = stringLiteral~":"~value
}

import java.io.FileReader

object ParseJSON extends JSON {
  def main(args: Array[String]) = {
    val reader = new FileReader(args(0))
    println(parseAll(value, reader))
  }
}
